fix: Download template error

--bug=1051908 --user=王孝刚 【知识库】导出的文档打开后里面为错误日志，无文档内容，导出的压缩包不能解压 https://www.tapd.cn/57709429/s/1650087

Author: wxg0103

apps/dataset/serializers/document_serializers.py

@@ -23,7 +23,8 @@
 from django.db.models import QuerySet, Count
 from django.db.models.functions import Substr, Reverse
 from django.http import HttpResponse
-from django.utils.translation import gettext_lazy as _, gettext
+from django.utils.translation import gettext_lazy as _, gettext, to_locale
+from django.utils.translation import get_language
 from drf_yasg import openapi
 from openpyxl.cell.cell import ILLEGAL_CHARACTERS_RE
 from rest_framework import serializers
@@ -65,8 +66,6 @@
     embedding_by_document_list
 from setting.models import Model
 from smartdoc.conf import PROJECT_DIR
-from django.utils.translation import gettext_lazy as _, gettext, to_locale
-from django.utils.translation import get_language
 
 parse_qa_handle_list = [XlsParseQAHandle(), CsvParseQAHandle(), XlsxParseQAHandle(), ZipParseQAHandle()]
 parse_table_handle_list = [CsvSplitTableHandle(), XlsSplitTableHandle(), XlsxSplitTableHandle()]